Print N M

Time limit1sMemory limit512 MB

Summary
Print the integers from 1 to N*M as N lines of M space-separated numbers each.
Level

Easy1 of 10

Topics
Implementation
Solved
No attempts yet

Problem

Given natural numbers N and M, print the numbers from 1 to N×M in the required format.

Input

The first line contains N and M separated by a single space. Both numbers are natural numbers less than or equal to 1,000.

Output

Print N lines in total. Each line must contain M integers separated by single spaces. Line 1 contains 1 through M, line 2 contains M+1 through 2×M, ..., and line N contains (N-1)×M+1 through N×M.

No line may begin or end with a space, and every line must end with a newline (\n).

Examples1

  1. Example 1

    Input
    3 4
    Expected output
    1 2 3 4
5 6 7 8
9 10 11 12